Tin with opening device



Aug; 11,1931. v L. coUAnE 1,818 69 TIN WITH ornume; msvxcs Filed March 2a, 1928 Patented Aug. 11, 1931 UNITED STATES LUCIEN COUAIDE, OF ST. DE liTIS, FRANCE TIN WITH OPENING DEVICE 1 Application filed March 26, 1928, Serial No. 264,588, and in Trance December 1, 1927. f

It is generally known that sheet-metalboxes designed to contain blackening shoecream, abrasive or other preparations, are

closed by a lid which must fit with friction 5 and Very accurately on the rim of the box, in order that, for the good preservation of the contents, the airtight closing of the box be ensured. Opening a box which is closed in this manner is rather difficult. .One must always use an instrument the point of which has to be inserted between the lid and the rim of the box, whereby an indentation is formed which prevents closing again the box airtightly so that the contents dry or deteriorate rapidly. On the other hand the manipulation necessary for opening the box can be scarcely carried out without the person who opens the box dirtying his fingers, this being another very disagreeable inconvenience.

It has already been proposed to apply to boxes of this kind a lateral lever, which permits of lifting the edge of the lid but owing to the thinness of the lid and of the box, it

26 is diflicult to'make the device resistant and efiicacious and at the sametime economical in manufacture, as the boxes in question must be manufactured at a very low price.

This invention has for its object to im 30 prove a deviceof this kind, in order to ensure, notwithstanding the very short length of they axle of rotation of the lever, a perfect application of the elements of this lever against the wall of the lid, in order to ensure that the action of this lever on the rim of the box be sure. Withthis object in view the two elements of the lever, situated the one on the outer side and the other on the inner side of the box, are connected with one another by a clasp fitted with claws, which forms the axle of rotation of the system and at the same time ensures a broad connection of these two elements, this double result being obtained by means of pieces, which can be very economically manufactured and put in place.

The invention comprises, as new industrial I product, any box of the kind mentioned fitted with the new opening system.

An embodiment of the invention'is illustrated, byway of example, in the panying drawings, in which I Fig. l is a vertical section on line A-A of Fig. 2.

accom- F ig. 2 is a horizontal section online BB of Fig. 1. g

Fig. 8 is an elevation viewed on the face of the opening system.

Fig. 4 shows a special manner of joining the two elements which form the opening lever and shows in front elevation and separated'the one from the other the several elements of this lever. a

Fig. 5 shows a side view of the joining. clasp; V I Referring to the drawings a designates the box and b'the lid. According to the invention the edge of the rim of the box is rolled inward to" form ,a bead a or it is reinforced to form a sufficiently large supporting surface. Through the rim of the lid 6 extends an axle eat any suitable point, on the inner end of which a lever d is keyed the end (1' of said lever bearing on the bead a of the y box a. On the outer end of axle 0 a handle e is keyed which extends along the outer surface of the rim of the lid. The lever d consists preferably of a small metal plate, the end 03 of which is bent at right angles, directed towards the centre of the box, the length of this bent end being equal to the thickness of the bead a of the box. A washer fof cardboard or other suitable material is inserted between the lever d and the rim of the lid, in order to ensure the perfect air- 5 tightness of the box.

The handle 6 and the lever d form together a lever of the 2 order, the bearing point of which is, at the end, on the bead a of the box, and it is evident that, when from the outer side the handle 6 is lifted in the direction of the arrow-line 9 (Fig. 3), the axle c is turned at the same time andlifts the lid 1) so that it is easily separated from the box. As the contact-surfaces between the bead a of the rim of the box and the end at of the lever d are sufficiently large, these elements cannot slip sidewards the one on the other so that the efiicacity of the system is absolutely certain. o0

As the handle 6 and the lever 41 are made of thin sheet-metal, they may be connected the one with the other by any suitable means. As shown in Figs. 4 and 5 the handle has 5 four slots h at its inner end and the lever has also four slots 2' at its inner end, said slots being arranged around the theoretical pivot-axis of the two elements. The axle c constitutes a clasp composed of a body having four claws j and is placed on the inner end of the handle so that the claws y" engage with the slots in both elements, the outer ends of said claws being then folded over at right angles.

Sheet-metal-boxes fitted with the opening system described and shown may be filled with blackening, shoe-cream, abrasive preparations or the like, which are perfectly shut off from the outer air. 7

These boxes may be of any desired shape and fitted with suitable accessories, according to the contents.

I claim 1- Improvements in sheet metal boxes, such as boxes for shoe cream, cleaning paste and the like, consisting of a lever device, comprising in combination, an outer lever, the inner a end of which has four slots, an inner lever,

the inner end of which has four slots corresponding with the said four slots of the outer lever, the outer end of said inner lever bent at right angles in outward direction, and a clasp having four claws adapted to be folded over to securely connect said levers the one with the other and withthefbox.

In testimony whereof I aifix my signature.

Luomiv .coUAD 

